Most of the main stream in the department stores juicers have motors that are small and run hot which begins to cook the juice
The enzymes which are the heart of the matter when it comes to juicing and why juicing is beneficial are cooked - apparently they are very delicate...
I'm no chemist, but Dr Gerson and his daughter and her offspring have tested this relationship in immune compromised patients and found that the Jack La Lannes (and I DO love him) models do not offer the same benefits as other models that I admit are more expensive (most likely) but are contributing to your overall health in a more complete way
Were you online when we went through a pretty extensive fact finding mission on juicers , oh, a couple of months ago?